With its swooping glass panels that resemble a kind of space-age ship's sails, Frank Gehry's design for the Louis Vuitton art collection, which opened in fall 2014, is worth the Metro ride to the far-flung 16th arrondissement. The multiple terraces let you peek through and around the panels: one side overlooks the verdant Bois de Boulogne park, while the other offers a view of the Eiffel Tower, looking miniature in the distance. The innovative exhibitions of modern and contemporary art rotate twice yearly. Outside on the ground level is a can't-miss piece by Olafur Eliasson: a dizzying row of yellow-glass and mirrored columns that are guaranteed to fill your Instagram feed.